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Finding the Fourth Proportional to 265,536.55, 398,307.59 and 212,565.26

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Solution

The fourth proportional to 265,536.55, 398,307.59 and 212,565.26 is: 318,850.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,536.55 : 398,307.59 = 212,565.26 : x
  2. Step 2: Convert to fraction form
    265,536.55/398,307.59 = 212,565.26/x
  3. Step 3: Cross multiply
    265,536.55x = 398,307.59 × 212,565.26
  4. Step 4: Simplify right side
    265,536.55x = 84,666,358,354.07
  5. Step 5: Solve for x
    x = 84,666,358,354.07/265,536.55
  6. Step 6: Final answer
    x = 318,850.11

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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.