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Finding the Fourth Proportional to 268,065.30, 370,013.16 and 172,572

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Solution

The fourth proportional to 268,065.30, 370,013.16 and 172,572 is: 238,202.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,065.30 : 370,013.16 = 172,572 : x
  2. Step 2: Convert to fraction form
    268,065.30/370,013.16 = 172,572/x
  3. Step 3: Cross multiply
    268,065.30x = 370,013.16 × 172,572
  4. Step 4: Simplify right side
    268,065.30x = 63,853,911,047.52
  5. Step 5: Solve for x
    x = 63,853,911,047.52/268,065.30
  6. Step 6: Final answer
    x = 238,202.82

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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.