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Finding the Fourth Proportional to 304,456.19, 420,139.15 and 168,495.84

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Solution

The fourth proportional to 304,456.19, 420,139.15 and 168,495.84 is: 232,518.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,456.19 : 420,139.15 = 168,495.84 : x
  2. Step 2: Convert to fraction form
    304,456.19/420,139.15 = 168,495.84/x
  3. Step 3: Cross multiply
    304,456.19x = 420,139.15 × 168,495.84
  4. Step 4: Simplify right side
    304,456.19x = 70,791,698,574.90
  5. Step 5: Solve for x
    x = 70,791,698,574.90/304,456.19
  6. Step 6: Final answer
    x = 232,518.51

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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.