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Finding the Fourth Proportional to 478,550.15, 660,390.14 and 263,710.07

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Solution

The fourth proportional to 478,550.15, 660,390.14 and 263,710.07 is: 363,914.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,550.15 : 660,390.14 = 263,710.07 : x
  2. Step 2: Convert to fraction form
    478,550.15/660,390.14 = 263,710.07/x
  3. Step 3: Cross multiply
    478,550.15x = 660,390.14 × 263,710.07
  4. Step 4: Simplify right side
    478,550.15x = 174,151,528,728.16
  5. Step 5: Solve for x
    x = 174,151,528,728.16/478,550.15
  6. Step 6: Final answer
    x = 363,914.90

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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.