Home / 261,633,111.40-392,449,667.10-256,258,340.20

Finding the Fourth Proportional to 261,633,111.40, 392,449,667.10 and 256,258,340.20

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Solution

The fourth proportional to 261,633,111.40, 392,449,667.10 and 256,258,340.20 is: 384,387,510.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,633,111.40 : 392,449,667.10 = 256,258,340.20 : x
  2. Step 2: Convert to fraction form
    261,633,111.40/392,449,667.10 = 256,258,340.20/x
  3. Step 3: Cross multiply
    261,633,111.40x = 392,449,667.10 × 256,258,340.20
  4. Step 4: Simplify right side
    261,633,111.40x = 100,568,500,303,088,544
  5. Step 5: Solve for x
    x = 100,568,500,303,088,544/261,633,111.40
  6. Step 6: Final answer
    x = 384,387,510.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.