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Finding the Fourth Proportional to 330,421.66, 495,881.76 and 153,053.12

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Solution

The fourth proportional to 330,421.66, 495,881.76 and 153,053.12 is: 229,695.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,421.66 : 495,881.76 = 153,053.12 : x
  2. Step 2: Convert to fraction form
    330,421.66/495,881.76 = 153,053.12/x
  3. Step 3: Cross multiply
    330,421.66x = 495,881.76 × 153,053.12
  4. Step 4: Simplify right side
    330,421.66x = 75,896,250,519.09
  5. Step 5: Solve for x
    x = 75,896,250,519.09/330,421.66
  6. Step 6: Final answer
    x = 229,695.14

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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.