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Finding the Fourth Proportional to 573,279.70, 859,660.35 and 257,574.10

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Solution

The fourth proportional to 573,279.70, 859,660.35 and 257,574.10 is: 386,244.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,279.70 : 859,660.35 = 257,574.10 : x
  2. Step 2: Convert to fraction form
    573,279.70/859,660.35 = 257,574.10/x
  3. Step 3: Cross multiply
    573,279.70x = 859,660.35 × 257,574.10
  4. Step 4: Simplify right side
    573,279.70x = 221,426,240,956.94
  5. Step 5: Solve for x
    x = 221,426,240,956.94/573,279.70
  6. Step 6: Final answer
    x = 386,244.69

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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.