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Finding the Fourth Proportional to 478,214.55, 660,253.64 and 297,196.56

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Solution

The fourth proportional to 478,214.55, 660,253.64 and 297,196.56 is: 410,328.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,214.55 : 660,253.64 = 297,196.56 : x
  2. Step 2: Convert to fraction form
    478,214.55/660,253.64 = 297,196.56/x
  3. Step 3: Cross multiply
    478,214.55x = 660,253.64 × 297,196.56
  4. Step 4: Simplify right side
    478,214.55x = 196,225,109,049.50
  5. Step 5: Solve for x
    x = 196,225,109,049.50/478,214.55
  6. Step 6: Final answer
    x = 410,328.60

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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.