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Finding the Fourth Proportional to 570,695.20, 855,840.88 and 165,803.20

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Solution

The fourth proportional to 570,695.20, 855,840.88 and 165,803.20 is: 248,646.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,695.20 : 855,840.88 = 165,803.20 : x
  2. Step 2: Convert to fraction form
    570,695.20/855,840.88 = 165,803.20/x
  3. Step 3: Cross multiply
    570,695.20x = 855,840.88 × 165,803.20
  4. Step 4: Simplify right side
    570,695.20x = 141,901,156,594.82
  5. Step 5: Solve for x
    x = 141,901,156,594.82/570,695.20
  6. Step 6: Final answer
    x = 248,646.14

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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.