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Finding the Fourth Proportional to 478,903.03, 660,891.35 and 261,109.93

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Solution

The fourth proportional to 478,903.03, 660,891.35 and 261,109.93 is: 360,334.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,903.03 : 660,891.35 = 261,109.93 : x
  2. Step 2: Convert to fraction form
    478,903.03/660,891.35 = 261,109.93/x
  3. Step 3: Cross multiply
    478,903.03x = 660,891.35 × 261,109.93
  4. Step 4: Simplify right side
    478,903.03x = 172,565,292,907.08
  5. Step 5: Solve for x
    x = 172,565,292,907.08/478,903.03
  6. Step 6: Final answer
    x = 360,334.52

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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.