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Finding the Fourth Proportional to 483,332.40, 724,307.40 and 355,978.80

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Solution

The fourth proportional to 483,332.40, 724,307.40 and 355,978.80 is: 533,459.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,332.40 : 724,307.40 = 355,978.80 : x
  2. Step 2: Convert to fraction form
    483,332.40/724,307.40 = 355,978.80/x
  3. Step 3: Cross multiply
    483,332.40x = 724,307.40 × 355,978.80
  4. Step 4: Simplify right side
    483,332.40x = 257,838,079,083.12
  5. Step 5: Solve for x
    x = 257,838,079,083.12/483,332.40
  6. Step 6: Final answer
    x = 533,459.12

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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.