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Finding the Fourth Proportional to 577,975.80, 866,970.08 and 258,143.91

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Solution

The fourth proportional to 577,975.80, 866,970.08 and 258,143.91 is: 387,218.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,975.80 : 866,970.08 = 258,143.91 : x
  2. Step 2: Convert to fraction form
    577,975.80/866,970.08 = 258,143.91/x
  3. Step 3: Cross multiply
    577,975.80x = 866,970.08 × 258,143.91
  4. Step 4: Simplify right side
    577,975.80x = 223,803,049,059.16
  5. Step 5: Solve for x
    x = 223,803,049,059.16/577,975.80
  6. Step 6: Final answer
    x = 387,218.72

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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.