Home / 282,672.18-390,087.90-155,345.04

Finding the Fourth Proportional to 282,672.18, 390,087.90 and 155,345.04

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Solution

The fourth proportional to 282,672.18, 390,087.90 and 155,345.04 is: 214,376.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,672.18 : 390,087.90 = 155,345.04 : x
  2. Step 2: Convert to fraction form
    282,672.18/390,087.90 = 155,345.04/x
  3. Step 3: Cross multiply
    282,672.18x = 390,087.90 × 155,345.04
  4. Step 4: Simplify right side
    282,672.18x = 60,598,220,429.02
  5. Step 5: Solve for x
    x = 60,598,220,429.02/282,672.18
  6. Step 6: Final answer
    x = 214,376.32

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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.