Home / 403,129.14-556,341.18-231,075.72

Finding the Fourth Proportional to 403,129.14, 556,341.18 and 231,075.72

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Solution

The fourth proportional to 403,129.14, 556,341.18 and 231,075.72 is: 318,897.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,129.14 : 556,341.18 = 231,075.72 : x
  2. Step 2: Convert to fraction form
    403,129.14/556,341.18 = 231,075.72/x
  3. Step 3: Cross multiply
    403,129.14x = 556,341.18 × 231,075.72
  4. Step 4: Simplify right side
    403,129.14x = 128,556,938,734.15
  5. Step 5: Solve for x
    x = 128,556,938,734.15/403,129.14
  6. Step 6: Final answer
    x = 318,897.66

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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.