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Finding the Fourth Proportional to 310,328.81, 428,227.25 and 174,352.08

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Solution

The fourth proportional to 310,328.81, 428,227.25 and 174,352.08 is: 240,590.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,328.81 : 428,227.25 = 174,352.08 : x
  2. Step 2: Convert to fraction form
    310,328.81/428,227.25 = 174,352.08/x
  3. Step 3: Cross multiply
    310,328.81x = 428,227.25 × 174,352.08
  4. Step 4: Simplify right side
    310,328.81x = 74,662,310,878.42
  5. Step 5: Solve for x
    x = 74,662,310,878.42/310,328.81
  6. Step 6: Final answer
    x = 240,590.98

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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.