Home / 282,886.28-390,385.86-155,562.76

Finding the Fourth Proportional to 282,886.28, 390,385.86 and 155,562.76

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Solution

The fourth proportional to 282,886.28, 390,385.86 and 155,562.76 is: 214,678.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,886.28 : 390,385.86 = 155,562.76 : x
  2. Step 2: Convert to fraction form
    282,886.28/390,385.86 = 155,562.76/x
  3. Step 3: Cross multiply
    282,886.28x = 390,385.86 × 155,562.76
  4. Step 4: Simplify right side
    282,886.28x = 60,729,501,846.57
  5. Step 5: Solve for x
    x = 60,729,501,846.57/282,886.28
  6. Step 6: Final answer
    x = 214,678.15

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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.