Home / 304,664.71-420,875.25-243,330.38

Finding the Fourth Proportional to 304,664.71, 420,875.25 and 243,330.38

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Solution

The fourth proportional to 304,664.71, 420,875.25 and 243,330.38 is: 336,145.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,664.71 : 420,875.25 = 243,330.38 : x
  2. Step 2: Convert to fraction form
    304,664.71/420,875.25 = 243,330.38/x
  3. Step 3: Cross multiply
    304,664.71x = 420,875.25 × 243,330.38
  4. Step 4: Simplify right side
    304,664.71x = 102,411,731,194.07
  5. Step 5: Solve for x
    x = 102,411,731,194.07/304,664.71
  6. Step 6: Final answer
    x = 336,145.70

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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.