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Finding the Fourth Proportional to 373,483.60, 515,386.86 and 212,316.28

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Solution

The fourth proportional to 373,483.60, 515,386.86 and 212,316.28 is: 292,984.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,483.60 : 515,386.86 = 212,316.28 : x
  2. Step 2: Convert to fraction form
    373,483.60/515,386.86 = 212,316.28/x
  3. Step 3: Cross multiply
    373,483.60x = 515,386.86 × 212,316.28
  4. Step 4: Simplify right side
    373,483.60x = 109,425,020,876.08
  5. Step 5: Solve for x
    x = 109,425,020,876.08/373,483.60
  6. Step 6: Final answer
    x = 292,984.81

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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.