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Finding the Fourth Proportional to 292,104, 438,156 and 70,488

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Solution

The fourth proportional to 292,104, 438,156 and 70,488 is: 105,732

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,104 : 438,156 = 70,488 : x
  2. Step 2: Convert to fraction form
    292,104/438,156 = 70,488/x
  3. Step 3: Cross multiply
    292,104x = 438,156 × 70,488
  4. Step 4: Simplify right side
    292,104x = 30,884,740,128
  5. Step 5: Solve for x
    x = 30,884,740,128/292,104
  6. Step 6: Final answer
    x = 105,732

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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.