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Finding the Fourth Proportional to 145,417.40, 218,126.10 and 144,495.80

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Solution

The fourth proportional to 145,417.40, 218,126.10 and 144,495.80 is: 216,743.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,417.40 : 218,126.10 = 144,495.80 : x
  2. Step 2: Convert to fraction form
    145,417.40/218,126.10 = 144,495.80/x
  3. Step 3: Cross multiply
    145,417.40x = 218,126.10 × 144,495.80
  4. Step 4: Simplify right side
    145,417.40x = 31,518,305,320.38
  5. Step 5: Solve for x
    x = 31,518,305,320.38/145,417.40
  6. Step 6: Final answer
    x = 216,743.70

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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.