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Finding the Fourth Proportional to 630,154.20, 869,602.20 and 343,657.20

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Solution

The fourth proportional to 630,154.20, 869,602.20 and 343,657.20 is: 474,241.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,154.20 : 869,602.20 = 343,657.20 : x
  2. Step 2: Convert to fraction form
    630,154.20/869,602.20 = 343,657.20/x
  3. Step 3: Cross multiply
    630,154.20x = 869,602.20 × 343,657.20
  4. Step 4: Simplify right side
    630,154.20x = 298,845,057,165.84
  5. Step 5: Solve for x
    x = 298,845,057,165.84/630,154.20
  6. Step 6: Final answer
    x = 474,241.16

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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.