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Finding the Fourth Proportional to 403,495.53, 556,825.52 and 231,420.15

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Solution

The fourth proportional to 403,495.53, 556,825.52 and 231,420.15 is: 319,360.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,495.53 : 556,825.52 = 231,420.15 : x
  2. Step 2: Convert to fraction form
    403,495.53/556,825.52 = 231,420.15/x
  3. Step 3: Cross multiply
    403,495.53x = 556,825.52 × 231,420.15
  4. Step 4: Simplify right side
    403,495.53x = 128,860,644,205.13
  5. Step 5: Solve for x
    x = 128,860,644,205.13/403,495.53
  6. Step 6: Final answer
    x = 319,360.77

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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.