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Finding the Fourth Proportional to 437,615.70, 655,111.35 and 260,031.30

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Solution

The fourth proportional to 437,615.70, 655,111.35 and 260,031.30 is: 389,267.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,615.70 : 655,111.35 = 260,031.30 : x
  2. Step 2: Convert to fraction form
    437,615.70/655,111.35 = 260,031.30/x
  3. Step 3: Cross multiply
    437,615.70x = 655,111.35 × 260,031.30
  4. Step 4: Simplify right side
    437,615.70x = 170,349,455,985.26
  5. Step 5: Solve for x
    x = 170,349,455,985.26/437,615.70
  6. Step 6: Final answer
    x = 389,267.24

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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.