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Finding the Fourth Proportional to 438,017.96, 604,456.80 and 247,031.48

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Solution

The fourth proportional to 438,017.96, 604,456.80 and 247,031.48 is: 340,898.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,017.96 : 604,456.80 = 247,031.48 : x
  2. Step 2: Convert to fraction form
    438,017.96/604,456.80 = 247,031.48/x
  3. Step 3: Cross multiply
    438,017.96x = 604,456.80 × 247,031.48
  4. Step 4: Simplify right side
    438,017.96x = 149,319,857,900.06
  5. Step 5: Solve for x
    x = 149,319,857,900.06/438,017.96
  6. Step 6: Final answer
    x = 340,898.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.