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Finding the Fourth Proportional to 438,362.90, 604,972.77 and 247,392.98

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Solution

The fourth proportional to 438,362.90, 604,972.77 and 247,392.98 is: 341,420.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,362.90 : 604,972.77 = 247,392.98 : x
  2. Step 2: Convert to fraction form
    438,362.90/604,972.77 = 247,392.98/x
  3. Step 3: Cross multiply
    438,362.90x = 604,972.77 × 247,392.98
  4. Step 4: Simplify right side
    438,362.90x = 149,666,016,389.16
  5. Step 5: Solve for x
    x = 149,666,016,389.16/438,362.90
  6. Step 6: Final answer
    x = 341,420.35

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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.