Home / 379,159.02-522,999.15-288,315.81

Finding the Fourth Proportional to 379,159.02, 522,999.15 and 288,315.81

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Solution

The fourth proportional to 379,159.02, 522,999.15 and 288,315.81 is: 397,693.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,159.02 : 522,999.15 = 288,315.81 : x
  2. Step 2: Convert to fraction form
    379,159.02/522,999.15 = 288,315.81/x
  3. Step 3: Cross multiply
    379,159.02x = 522,999.15 × 288,315.81
  4. Step 4: Simplify right side
    379,159.02x = 150,788,923,561.56
  5. Step 5: Solve for x
    x = 150,788,923,561.56/379,159.02
  6. Step 6: Final answer
    x = 397,693.09

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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.