Home / 279,030.47-385,075.20-158,174.10

Finding the Fourth Proportional to 279,030.47, 385,075.20 and 158,174.10

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Solution

The fourth proportional to 279,030.47, 385,075.20 and 158,174.10 is: 218,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,030.47 : 385,075.20 = 158,174.10 : x
  2. Step 2: Convert to fraction form
    279,030.47/385,075.20 = 158,174.10/x
  3. Step 3: Cross multiply
    279,030.47x = 385,075.20 × 158,174.10
  4. Step 4: Simplify right side
    279,030.47x = 60,908,923,192.32
  5. Step 5: Solve for x
    x = 60,908,923,192.32/279,030.47
  6. Step 6: Final answer
    x = 218,287.72

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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.