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Finding the Fourth Proportional to 478,326.68, 660,077.16 and 260,530.48

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Solution

The fourth proportional to 478,326.68, 660,077.16 and 260,530.48 is: 359,524.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,326.68 : 660,077.16 = 260,530.48 : x
  2. Step 2: Convert to fraction form
    478,326.68/660,077.16 = 260,530.48/x
  3. Step 3: Cross multiply
    478,326.68x = 660,077.16 × 260,530.48
  4. Step 4: Simplify right side
    478,326.68x = 171,970,219,331.84
  5. Step 5: Solve for x
    x = 171,970,219,331.84/478,326.68
  6. Step 6: Final answer
    x = 359,524.62

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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.