Home / 256,217.12-382,643.56-218,373.92

Finding the Fourth Proportional to 256,217.12, 382,643.56 and 218,373.92

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Solution

The fourth proportional to 256,217.12, 382,643.56 and 218,373.92 is: 326,127.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,217.12 : 382,643.56 = 218,373.92 : x
  2. Step 2: Convert to fraction form
    256,217.12/382,643.56 = 218,373.92/x
  3. Step 3: Cross multiply
    256,217.12x = 382,643.56 × 218,373.92
  4. Step 4: Simplify right side
    256,217.12x = 83,559,374,159.96
  5. Step 5: Solve for x
    x = 83,559,374,159.96/256,217.12
  6. Step 6: Final answer
    x = 326,127.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.