Home / 282,920.13-390,437.96-155,603.93

Finding the Fourth Proportional to 282,920.13, 390,437.96 and 155,603.93

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Solution

The fourth proportional to 282,920.13, 390,437.96 and 155,603.93 is: 214,737.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,920.13 : 390,437.96 = 155,603.93 : x
  2. Step 2: Convert to fraction form
    282,920.13/390,437.96 = 155,603.93/x
  3. Step 3: Cross multiply
    282,920.13x = 390,437.96 × 155,603.93
  4. Step 4: Simplify right side
    282,920.13x = 60,753,678,266.97
  5. Step 5: Solve for x
    x = 60,753,678,266.97/282,920.13
  6. Step 6: Final answer
    x = 214,737.91

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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.