Home / 280,587,264.71-387,194,806.40-155,132,207.64

Finding the Fourth Proportional to 280,587,264.71, 387,194,806.40 and 155,132,207.64

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Solution

The fourth proportional to 280,587,264.71, 387,194,806.40 and 155,132,207.64 is: 214,073,811.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,587,264.71 : 387,194,806.40 = 155,132,207.64 : x
  2. Step 2: Convert to fraction form
    280,587,264.71/387,194,806.40 = 155,132,207.64/x
  3. Step 3: Cross multiply
    280,587,264.71x = 387,194,806.40 × 155,132,207.64
  4. Step 4: Simplify right side
    280,587,264.71x = 60,066,385,102,798,728
  5. Step 5: Solve for x
    x = 60,066,385,102,798,728/280,587,264.71
  6. Step 6: Final answer
    x = 214,073,811.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.