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Finding the Fourth Proportional to 292,137.18, 438,205.77 and 70,521.18

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Solution

The fourth proportional to 292,137.18, 438,205.77 and 70,521.18 is: 105,781.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,137.18 : 438,205.77 = 70,521.18 : x
  2. Step 2: Convert to fraction form
    292,137.18/438,205.77 = 70,521.18/x
  3. Step 3: Cross multiply
    292,137.18x = 438,205.77 × 70,521.18
  4. Step 4: Simplify right side
    292,137.18x = 30,902,787,983.21
  5. Step 5: Solve for x
    x = 30,902,787,983.21/292,137.18
  6. Step 6: Final answer
    x = 105,781.77

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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.