Home / 282,972.13-390,493.40-155,647.73

Finding the Fourth Proportional to 282,972.13, 390,493.40 and 155,647.73

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Solution

The fourth proportional to 282,972.13, 390,493.40 and 155,647.73 is: 214,789.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,972.13 : 390,493.40 = 155,647.73 : x
  2. Step 2: Convert to fraction form
    282,972.13/390,493.40 = 155,647.73/x
  3. Step 3: Cross multiply
    282,972.13x = 390,493.40 × 155,647.73
  4. Step 4: Simplify right side
    282,972.13x = 60,779,411,487.98
  5. Step 5: Solve for x
    x = 60,779,411,487.98/282,972.13
  6. Step 6: Final answer
    x = 214,789.39

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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.