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Finding the Fourth Proportional to 292,506.88, 438,760.32 and 70,890.88

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Solution

The fourth proportional to 292,506.88, 438,760.32 and 70,890.88 is: 106,336.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,506.88 : 438,760.32 = 70,890.88 : x
  2. Step 2: Convert to fraction form
    292,506.88/438,760.32 = 70,890.88/x
  3. Step 3: Cross multiply
    292,506.88x = 438,760.32 × 70,890.88
  4. Step 4: Simplify right side
    292,506.88x = 31,104,105,193.88
  5. Step 5: Solve for x
    x = 31,104,105,193.88/292,506.88
  6. Step 6: Final answer
    x = 106,336.32

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1.5x scale

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.