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Finding the Fourth Proportional to 478,320.12, 660,111.60 and 263,460.12

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Solution

The fourth proportional to 478,320.12, 660,111.60 and 263,460.12 is: 363,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,320.12 : 660,111.60 = 263,460.12 : x
  2. Step 2: Convert to fraction form
    478,320.12/660,111.60 = 263,460.12/x
  3. Step 3: Cross multiply
    478,320.12x = 660,111.60 × 263,460.12
  4. Step 4: Simplify right side
    478,320.12x = 173,913,081,349.39
  5. Step 5: Solve for x
    x = 173,913,081,349.39/478,320.12
  6. Step 6: Final answer
    x = 363,591.40

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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.