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Finding the Fourth Proportional to 487,165.40, 730,056.90 and 359,811.80

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Solution

The fourth proportional to 487,165.40, 730,056.90 and 359,811.80 is: 539,207.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,165.40 : 730,056.90 = 359,811.80 : x
  2. Step 2: Convert to fraction form
    487,165.40/730,056.90 = 359,811.80/x
  3. Step 3: Cross multiply
    487,165.40x = 730,056.90 × 359,811.80
  4. Step 4: Simplify right side
    487,165.40x = 262,683,087,291.42
  5. Step 5: Solve for x
    x = 262,683,087,291.42/487,165.40
  6. Step 6: Final answer
    x = 539,207.19

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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.