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Finding the Fourth Proportional to 377,985.60, 566,978.40 and 349,117.20

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Solution

The fourth proportional to 377,985.60, 566,978.40 and 349,117.20 is: 523,675.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,985.60 : 566,978.40 = 349,117.20 : x
  2. Step 2: Convert to fraction form
    377,985.60/566,978.40 = 349,117.20/x
  3. Step 3: Cross multiply
    377,985.60x = 566,978.40 × 349,117.20
  4. Step 4: Simplify right side
    377,985.60x = 197,941,911,468.48
  5. Step 5: Solve for x
    x = 197,941,911,468.48/377,985.60
  6. Step 6: Final answer
    x = 523,675.80

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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.