Home / 282,744.32-390,167.28-155,428.16

Finding the Fourth Proportional to 282,744.32, 390,167.28 and 155,428.16

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Solution

The fourth proportional to 282,744.32, 390,167.28 and 155,428.16 is: 214,479.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,744.32 : 390,167.28 = 155,428.16 : x
  2. Step 2: Convert to fraction form
    282,744.32/390,167.28 = 155,428.16/x
  3. Step 3: Cross multiply
    282,744.32x = 390,167.28 × 155,428.16
  4. Step 4: Simplify right side
    282,744.32x = 60,642,982,422.60
  5. Step 5: Solve for x
    x = 60,642,982,422.60/282,744.32
  6. Step 6: Final answer
    x = 214,479.93

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1.5x scale

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.