Home / 282,726.04-390,162.78-155,414.68

Finding the Fourth Proportional to 282,726.04, 390,162.78 and 155,414.68

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Solution

The fourth proportional to 282,726.04, 390,162.78 and 155,414.68 is: 214,472.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,726.04 : 390,162.78 = 155,414.68 : x
  2. Step 2: Convert to fraction form
    282,726.04/390,162.78 = 155,414.68/x
  3. Step 3: Cross multiply
    282,726.04x = 390,162.78 × 155,414.68
  4. Step 4: Simplify right side
    282,726.04x = 60,637,023,601.61
  5. Step 5: Solve for x
    x = 60,637,023,601.61/282,726.04
  6. Step 6: Final answer
    x = 214,472.72

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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.