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Finding the Fourth Proportional to 304,070, 455,911.76 and 266,705.12

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Solution

The fourth proportional to 304,070, 455,911.76 and 266,705.12 is: 399,888.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,070 : 455,911.76 = 266,705.12 : x
  2. Step 2: Convert to fraction form
    304,070/455,911.76 = 266,705.12/x
  3. Step 3: Cross multiply
    304,070x = 455,911.76 × 266,705.12
  4. Step 4: Simplify right side
    304,070x = 121,594,000,660.21
  5. Step 5: Solve for x
    x = 121,594,000,660.21/304,070
  6. Step 6: Final answer
    x = 399,888.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.