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Finding the Fourth Proportional to 346,658.80, 478,611.48 and 283,149.04

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Solution

The fourth proportional to 346,658.80, 478,611.48 and 283,149.04 is: 390,927.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,658.80 : 478,611.48 = 283,149.04 : x
  2. Step 2: Convert to fraction form
    346,658.80/478,611.48 = 283,149.04/x
  3. Step 3: Cross multiply
    346,658.80x = 478,611.48 × 283,149.04
  4. Step 4: Simplify right side
    346,658.80x = 135,518,381,094.98
  5. Step 5: Solve for x
    x = 135,518,381,094.98/346,658.80
  6. Step 6: Final answer
    x = 390,927.28

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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.