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Finding the Fourth Proportional to 515,275.80, 710,835.76 and 343,273.72

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Solution

The fourth proportional to 515,275.80, 710,835.76 and 343,273.72 is: 473,554.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,275.80 : 710,835.76 = 343,273.72 : x
  2. Step 2: Convert to fraction form
    515,275.80/710,835.76 = 343,273.72/x
  3. Step 3: Cross multiply
    515,275.80x = 710,835.76 × 343,273.72
  4. Step 4: Simplify right side
    515,275.80x = 244,011,235,644.23
  5. Step 5: Solve for x
    x = 244,011,235,644.23/515,275.80
  6. Step 6: Final answer
    x = 473,554.62

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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.