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Finding the Fourth Proportional to 389,818.30, 584,727.45 and 94,330.30

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Solution

The fourth proportional to 389,818.30, 584,727.45 and 94,330.30 is: 141,495.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,818.30 : 584,727.45 = 94,330.30 : x
  2. Step 2: Convert to fraction form
    389,818.30/584,727.45 = 94,330.30/x
  3. Step 3: Cross multiply
    389,818.30x = 584,727.45 × 94,330.30
  4. Step 4: Simplify right side
    389,818.30x = 55,157,515,776.74
  5. Step 5: Solve for x
    x = 55,157,515,776.74/389,818.30
  6. Step 6: Final answer
    x = 141,495.45

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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.