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Finding the Fourth Proportional to 478,431.84, 660,211.42 and 263,567.20

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Solution

The fourth proportional to 478,431.84, 660,211.42 and 263,567.20 is: 363,709.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,431.84 : 660,211.42 = 263,567.20 : x
  2. Step 2: Convert to fraction form
    478,431.84/660,211.42 = 263,567.20/x
  3. Step 3: Cross multiply
    478,431.84x = 660,211.42 × 263,567.20
  4. Step 4: Simplify right side
    478,431.84x = 174,010,075,377.42
  5. Step 5: Solve for x
    x = 174,010,075,377.42/478,431.84
  6. Step 6: Final answer
    x = 363,709.23

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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.