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Finding the Fourth Proportional to 265,483.40, 398,432.46 and 99,318.92

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Solution

The fourth proportional to 265,483.40, 398,432.46 and 99,318.92 is: 149,055.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,483.40 : 398,432.46 = 99,318.92 : x
  2. Step 2: Convert to fraction form
    265,483.40/398,432.46 = 99,318.92/x
  3. Step 3: Cross multiply
    265,483.40x = 398,432.46 × 99,318.92
  4. Step 4: Simplify right side
    265,483.40x = 39,571,881,620.14
  5. Step 5: Solve for x
    x = 39,571,881,620.14/265,483.40
  6. Step 6: Final answer
    x = 149,055.95

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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.