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Finding the Fourth Proportional to 292,537, 438,805.50 and 70,921

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Solution

The fourth proportional to 292,537, 438,805.50 and 70,921 is: 106,381.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,537 : 438,805.50 = 70,921 : x
  2. Step 2: Convert to fraction form
    292,537/438,805.50 = 70,921/x
  3. Step 3: Cross multiply
    292,537x = 438,805.50 × 70,921
  4. Step 4: Simplify right side
    292,537x = 31,120,524,865.50
  5. Step 5: Solve for x
    x = 31,120,524,865.50/292,537
  6. Step 6: Final answer
    x = 106,381.50

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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.