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Finding the Fourth Proportional to 304,387.79, 420,019.16 and 168,403.77

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Solution

The fourth proportional to 304,387.79, 420,019.16 and 168,403.77 is: 232,377.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,387.79 : 420,019.16 = 168,403.77 : x
  2. Step 2: Convert to fraction form
    304,387.79/420,019.16 = 168,403.77/x
  3. Step 3: Cross multiply
    304,387.79x = 420,019.16 × 168,403.77
  4. Step 4: Simplify right side
    304,387.79x = 70,732,809,174.21
  5. Step 5: Solve for x
    x = 70,732,809,174.21/304,387.79
  6. Step 6: Final answer
    x = 232,377.29

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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.