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Finding the Fourth Proportional to 488,156.61, 729,266.35 and 315,975.72

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Solution

The fourth proportional to 488,156.61, 729,266.35 and 315,975.72 is: 472,042.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,156.61 : 729,266.35 = 315,975.72 : x
  2. Step 2: Convert to fraction form
    488,156.61/729,266.35 = 315,975.72/x
  3. Step 3: Cross multiply
    488,156.61x = 729,266.35 × 315,975.72
  4. Step 4: Simplify right side
    488,156.61x = 230,430,460,013.02
  5. Step 5: Solve for x
    x = 230,430,460,013.02/488,156.61
  6. Step 6: Final answer
    x = 472,042.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.