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Finding the Fourth Proportional to 373,289.63, 515,152.65 and 212,151.47

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Solution

The fourth proportional to 373,289.63, 515,152.65 and 212,151.47 is: 292,776.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,289.63 : 515,152.65 = 212,151.47 : x
  2. Step 2: Convert to fraction form
    373,289.63/515,152.65 = 212,151.47/x
  3. Step 3: Cross multiply
    373,289.63x = 515,152.65 × 212,151.47
  4. Step 4: Simplify right side
    373,289.63x = 109,290,389,396.13
  5. Step 5: Solve for x
    x = 109,290,389,396.13/373,289.63
  6. Step 6: Final answer
    x = 292,776.39

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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.