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Finding the Fourth Proportional to 301,957.20, 452,417.40 and 143,845.20

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Solution

The fourth proportional to 301,957.20, 452,417.40 and 143,845.20 is: 215,520.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,957.20 : 452,417.40 = 143,845.20 : x
  2. Step 2: Convert to fraction form
    301,957.20/452,417.40 = 143,845.20/x
  3. Step 3: Cross multiply
    301,957.20x = 452,417.40 × 143,845.20
  4. Step 4: Simplify right side
    301,957.20x = 65,078,071,386.48
  5. Step 5: Solve for x
    x = 65,078,071,386.48/301,957.20
  6. Step 6: Final answer
    x = 215,520.85

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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.