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Finding the Fourth Proportional to 314,909.51, 434,307.65 and 266,090.27

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Solution

The fourth proportional to 314,909.51, 434,307.65 and 266,090.27 is: 366,978.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,909.51 : 434,307.65 = 266,090.27 : x
  2. Step 2: Convert to fraction form
    314,909.51/434,307.65 = 266,090.27/x
  3. Step 3: Cross multiply
    314,909.51x = 434,307.65 × 266,090.27
  4. Step 4: Simplify right side
    314,909.51x = 115,565,036,349.58
  5. Step 5: Solve for x
    x = 115,565,036,349.58/314,909.51
  6. Step 6: Final answer
    x = 366,978.56

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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.