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Finding the Fourth Proportional to 439,763.64, 606,888.72 and 258,473

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Solution

The fourth proportional to 439,763.64, 606,888.72 and 258,473 is: 356,701.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,763.64 : 606,888.72 = 258,473 : x
  2. Step 2: Convert to fraction form
    439,763.64/606,888.72 = 258,473/x
  3. Step 3: Cross multiply
    439,763.64x = 606,888.72 × 258,473
  4. Step 4: Simplify right side
    439,763.64x = 156,864,348,124.56
  5. Step 5: Solve for x
    x = 156,864,348,124.56/439,763.64
  6. Step 6: Final answer
    x = 356,701.50

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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.