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Finding the Fourth Proportional to 292,590, 438,885.18 and 70,974

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Solution

The fourth proportional to 292,590, 438,885.18 and 70,974 is: 106,461.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,590 : 438,885.18 = 70,974 : x
  2. Step 2: Convert to fraction form
    292,590/438,885.18 = 70,974/x
  3. Step 3: Cross multiply
    292,590x = 438,885.18 × 70,974
  4. Step 4: Simplify right side
    292,590x = 31,149,436,765.32
  5. Step 5: Solve for x
    x = 31,149,436,765.32/292,590
  6. Step 6: Final answer
    x = 106,461.04

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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.