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Finding the Fourth Proportional to 640,326.88, 960,507.60 and 167,001.76

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Solution

The fourth proportional to 640,326.88, 960,507.60 and 167,001.76 is: 250,507.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,326.88 : 960,507.60 = 167,001.76 : x
  2. Step 2: Convert to fraction form
    640,326.88/960,507.60 = 167,001.76/x
  3. Step 3: Cross multiply
    640,326.88x = 960,507.60 × 167,001.76
  4. Step 4: Simplify right side
    640,326.88x = 160,406,459,693.38
  5. Step 5: Solve for x
    x = 160,406,459,693.38/640,326.88
  6. Step 6: Final answer
    x = 250,507.15

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1.5x scale

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.