Home / 315,765.30-435,751.02-172,522.28

Finding the Fourth Proportional to 315,765.30, 435,751.02 and 172,522.28

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Solution

The fourth proportional to 315,765.30, 435,751.02 and 172,522.28 is: 238,077.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,765.30 : 435,751.02 = 172,522.28 : x
  2. Step 2: Convert to fraction form
    315,765.30/435,751.02 = 172,522.28/x
  3. Step 3: Cross multiply
    315,765.30x = 435,751.02 × 172,522.28
  4. Step 4: Simplify right side
    315,765.30x = 75,176,759,482.73
  5. Step 5: Solve for x
    x = 75,176,759,482.73/315,765.30
  6. Step 6: Final answer
    x = 238,077.96

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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.