Home / 282,939.52-390,468.90-155,619.76

Finding the Fourth Proportional to 282,939.52, 390,468.90 and 155,619.76

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Solution

The fourth proportional to 282,939.52, 390,468.90 and 155,619.76 is: 214,762.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,939.52 : 390,468.90 = 155,619.76 : x
  2. Step 2: Convert to fraction form
    282,939.52/390,468.90 = 155,619.76/x
  3. Step 3: Cross multiply
    282,939.52x = 390,468.90 × 155,619.76
  4. Step 4: Simplify right side
    282,939.52x = 60,764,676,505.46
  5. Step 5: Solve for x
    x = 60,764,676,505.46/282,939.52
  6. Step 6: Final answer
    x = 214,762.07

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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.