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Finding the Fourth Proportional to 144,407.17, 216,430.12 and 69,507.28

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Solution

The fourth proportional to 144,407.17, 216,430.12 and 69,507.28 is: 104,173.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,407.17 : 216,430.12 = 69,507.28 : x
  2. Step 2: Convert to fraction form
    144,407.17/216,430.12 = 69,507.28/x
  3. Step 3: Cross multiply
    144,407.17x = 216,430.12 × 69,507.28
  4. Step 4: Simplify right side
    144,407.17x = 15,043,468,951.27
  5. Step 5: Solve for x
    x = 15,043,468,951.27/144,407.17
  6. Step 6: Final answer
    x = 104,173.98

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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.