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Finding the Fourth Proportional to 438,376.58, 604,959.81 and 247,430.42

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Solution

The fourth proportional to 438,376.58, 604,959.81 and 247,430.42 is: 341,454.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,376.58 : 604,959.81 = 247,430.42 : x
  2. Step 2: Convert to fraction form
    438,376.58/604,959.81 = 247,430.42/x
  3. Step 3: Cross multiply
    438,376.58x = 604,959.81 × 247,430.42
  4. Step 4: Simplify right side
    438,376.58x = 149,685,459,871.42
  5. Step 5: Solve for x
    x = 149,685,459,871.42/438,376.58
  6. Step 6: Final answer
    x = 341,454.05

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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.