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Finding the Fourth Proportional to 421,683.97, 581,913.89 and 230,698.93

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Solution

The fourth proportional to 421,683.97, 581,913.89 and 230,698.93 is: 318,359.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,683.97 : 581,913.89 = 230,698.93 : x
  2. Step 2: Convert to fraction form
    421,683.97/581,913.89 = 230,698.93/x
  3. Step 3: Cross multiply
    421,683.97x = 581,913.89 × 230,698.93
  4. Step 4: Simplify right side
    421,683.97x = 134,246,909,442.32
  5. Step 5: Solve for x
    x = 134,246,909,442.32/421,683.97
  6. Step 6: Final answer
    x = 318,359.06

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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.