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Finding the Fourth Proportional to 144,713.60, 217,070.40 and 100,390.40

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Solution

The fourth proportional to 144,713.60, 217,070.40 and 100,390.40 is: 150,585.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,713.60 : 217,070.40 = 100,390.40 : x
  2. Step 2: Convert to fraction form
    144,713.60/217,070.40 = 100,390.40/x
  3. Step 3: Cross multiply
    144,713.60x = 217,070.40 × 100,390.40
  4. Step 4: Simplify right side
    144,713.60x = 21,791,784,284.16
  5. Step 5: Solve for x
    x = 21,791,784,284.16/144,713.60
  6. Step 6: Final answer
    x = 150,585.60

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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.