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Finding the Fourth Proportional to 375,407.68, 563,106.76 and 91,100.56

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Solution

The fourth proportional to 375,407.68, 563,106.76 and 91,100.56 is: 136,649.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,407.68 : 563,106.76 = 91,100.56 : x
  2. Step 2: Convert to fraction form
    375,407.68/563,106.76 = 91,100.56/x
  3. Step 3: Cross multiply
    375,407.68x = 563,106.76 × 91,100.56
  4. Step 4: Simplify right side
    375,407.68x = 51,299,341,175.79
  5. Step 5: Solve for x
    x = 51,299,341,175.79/375,407.68
  6. Step 6: Final answer
    x = 136,649.68

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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.