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Finding the Fourth Proportional to 439,970.40, 658,400.40 and 300,002.40

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Solution

The fourth proportional to 439,970.40, 658,400.40 and 300,002.40 is: 448,943.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,970.40 : 658,400.40 = 300,002.40 : x
  2. Step 2: Convert to fraction form
    439,970.40/658,400.40 = 300,002.40/x
  3. Step 3: Cross multiply
    439,970.40x = 658,400.40 × 300,002.40
  4. Step 4: Simplify right side
    439,970.40x = 197,521,700,160.96
  5. Step 5: Solve for x
    x = 197,521,700,160.96/439,970.40
  6. Step 6: Final answer
    x = 448,943.16

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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.