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Finding the Fourth Proportional to 438,307.40, 657,461.10 and 359,510.60

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Solution

The fourth proportional to 438,307.40, 657,461.10 and 359,510.60 is: 539,265.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,307.40 : 657,461.10 = 359,510.60 : x
  2. Step 2: Convert to fraction form
    438,307.40/657,461.10 = 359,510.60/x
  3. Step 3: Cross multiply
    438,307.40x = 657,461.10 × 359,510.60
  4. Step 4: Simplify right side
    438,307.40x = 236,364,234,537.66
  5. Step 5: Solve for x
    x = 236,364,234,537.66/438,307.40
  6. Step 6: Final answer
    x = 539,265.90

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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.