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Finding the Fourth Proportional to 346,425.48, 478,039.88 and 193,451.72

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Solution

The fourth proportional to 346,425.48, 478,039.88 and 193,451.72 is: 266,948.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,425.48 : 478,039.88 = 193,451.72 : x
  2. Step 2: Convert to fraction form
    346,425.48/478,039.88 = 193,451.72/x
  3. Step 3: Cross multiply
    346,425.48x = 478,039.88 × 193,451.72
  4. Step 4: Simplify right side
    346,425.48x = 92,477,635,108.02
  5. Step 5: Solve for x
    x = 92,477,635,108.02/346,425.48
  6. Step 6: Final answer
    x = 266,948.13

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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.