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Finding the Fourth Proportional to 348,085.62, 480,315.15 and 212,070.21

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Solution

The fourth proportional to 348,085.62, 480,315.15 and 212,070.21 is: 292,630.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,085.62 : 480,315.15 = 212,070.21 : x
  2. Step 2: Convert to fraction form
    348,085.62/480,315.15 = 212,070.21/x
  3. Step 3: Cross multiply
    348,085.62x = 480,315.15 × 212,070.21
  4. Step 4: Simplify right side
    348,085.62x = 101,860,534,726.68
  5. Step 5: Solve for x
    x = 101,860,534,726.68/348,085.62
  6. Step 6: Final answer
    x = 292,630.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.