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Finding the Fourth Proportional to 308,763.83, 426,084.91 and 170,948.89

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Solution

The fourth proportional to 308,763.83, 426,084.91 and 170,948.89 is: 235,904.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,763.83 : 426,084.91 = 170,948.89 : x
  2. Step 2: Convert to fraction form
    308,763.83/426,084.91 = 170,948.89/x
  3. Step 3: Cross multiply
    308,763.83x = 426,084.91 × 170,948.89
  4. Step 4: Simplify right side
    308,763.83x = 72,838,742,410.25
  5. Step 5: Solve for x
    x = 72,838,742,410.25/308,763.83
  6. Step 6: Final answer
    x = 235,904.39

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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.