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Finding the Fourth Proportional to 439,672, 606,747.40 and 248,681.28

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Solution

The fourth proportional to 439,672, 606,747.40 and 248,681.28 is: 343,180.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,672 : 606,747.40 = 248,681.28 : x
  2. Step 2: Convert to fraction form
    439,672/606,747.40 = 248,681.28/x
  3. Step 3: Cross multiply
    439,672x = 606,747.40 × 248,681.28
  4. Step 4: Simplify right side
    439,672x = 150,886,720,068.67
  5. Step 5: Solve for x
    x = 150,886,720,068.67/439,672
  6. Step 6: Final answer
    x = 343,180.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.