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Finding the Fourth Proportional to 640,132.98, 960,187.05 and 191,158.08

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Solution

The fourth proportional to 640,132.98, 960,187.05 and 191,158.08 is: 286,733.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,132.98 : 960,187.05 = 191,158.08 : x
  2. Step 2: Convert to fraction form
    640,132.98/960,187.05 = 191,158.08/x
  3. Step 3: Cross multiply
    640,132.98x = 960,187.05 × 191,158.08
  4. Step 4: Simplify right side
    640,132.98x = 183,547,512,918.86
  5. Step 5: Solve for x
    x = 183,547,512,918.86/640,132.98
  6. Step 6: Final answer
    x = 286,733.41

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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.