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Finding the Fourth Proportional to 323,548.95, 485,280.90 and 98,931.90

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Solution

The fourth proportional to 323,548.95, 485,280.90 and 98,931.90 is: 148,384.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,548.95 : 485,280.90 = 98,931.90 : x
  2. Step 2: Convert to fraction form
    323,548.95/485,280.90 = 98,931.90/x
  3. Step 3: Cross multiply
    323,548.95x = 485,280.90 × 98,931.90
  4. Step 4: Simplify right side
    323,548.95x = 48,009,761,470.71
  5. Step 5: Solve for x
    x = 48,009,761,470.71/323,548.95
  6. Step 6: Final answer
    x = 148,384.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.