Home / 319,110.80-478,666.20-288,006.80

Finding the Fourth Proportional to 319,110.80, 478,666.20 and 288,006.80

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Solution

The fourth proportional to 319,110.80, 478,666.20 and 288,006.80 is: 432,010.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,110.80 : 478,666.20 = 288,006.80 : x
  2. Step 2: Convert to fraction form
    319,110.80/478,666.20 = 288,006.80/x
  3. Step 3: Cross multiply
    319,110.80x = 478,666.20 × 288,006.80
  4. Step 4: Simplify right side
    319,110.80x = 137,859,120,530.16
  5. Step 5: Solve for x
    x = 137,859,120,530.16/319,110.80
  6. Step 6: Final answer
    x = 432,010.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.