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Finding the Fourth Proportional to 144,477.60, 216,716.40 and 129,962.40

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Solution

The fourth proportional to 144,477.60, 216,716.40 and 129,962.40 is: 194,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,477.60 : 216,716.40 = 129,962.40 : x
  2. Step 2: Convert to fraction form
    144,477.60/216,716.40 = 129,962.40/x
  3. Step 3: Cross multiply
    144,477.60x = 216,716.40 × 129,962.40
  4. Step 4: Simplify right side
    144,477.60x = 28,164,983,463.36
  5. Step 5: Solve for x
    x = 28,164,983,463.36/144,477.60
  6. Step 6: Final answer
    x = 194,943.60

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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.