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Finding the Fourth Proportional to 423,430.25, 584,312.31 and 251,355.57

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Solution

The fourth proportional to 423,430.25, 584,312.31 and 251,355.57 is: 346,857.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,430.25 : 584,312.31 = 251,355.57 : x
  2. Step 2: Convert to fraction form
    423,430.25/584,312.31 = 251,355.57/x
  3. Step 3: Cross multiply
    423,430.25x = 584,312.31 × 251,355.57
  4. Step 4: Simplify right side
    423,430.25x = 146,870,154,126.72
  5. Step 5: Solve for x
    x = 146,870,154,126.72/423,430.25
  6. Step 6: Final answer
    x = 346,857.96

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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.