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Finding the Fourth Proportional to 370,649.07, 555,762.90 and 145,887.66

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Solution

The fourth proportional to 370,649.07, 555,762.90 and 145,887.66 is: 218,748.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,649.07 : 555,762.90 = 145,887.66 : x
  2. Step 2: Convert to fraction form
    370,649.07/555,762.90 = 145,887.66/x
  3. Step 3: Cross multiply
    370,649.07x = 555,762.90 × 145,887.66
  4. Step 4: Simplify right side
    370,649.07x = 81,078,948,995.81
  5. Step 5: Solve for x
    x = 81,078,948,995.81/370,649.07
  6. Step 6: Final answer
    x = 218,748.56

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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.