Home / 282,966.76-390,485.90-155,642.32

Finding the Fourth Proportional to 282,966.76, 390,485.90 and 155,642.32

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Solution

The fourth proportional to 282,966.76, 390,485.90 and 155,642.32 is: 214,781.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,966.76 : 390,485.90 = 155,642.32 : x
  2. Step 2: Convert to fraction form
    282,966.76/390,485.90 = 155,642.32/x
  3. Step 3: Cross multiply
    282,966.76x = 390,485.90 × 155,642.32
  4. Step 4: Simplify right side
    282,966.76x = 60,776,131,403.29
  5. Step 5: Solve for x
    x = 60,776,131,403.29/282,966.76
  6. Step 6: Final answer
    x = 214,781.88

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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.