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Finding the Fourth Proportional to 330,095.67, 495,036.64 and 105,403.47

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Solution

The fourth proportional to 330,095.67, 495,036.64 and 105,403.47 is: 158,071.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,095.67 : 495,036.64 = 105,403.47 : x
  2. Step 2: Convert to fraction form
    330,095.67/495,036.64 = 105,403.47/x
  3. Step 3: Cross multiply
    330,095.67x = 495,036.64 × 105,403.47
  4. Step 4: Simplify right side
    330,095.67x = 52,178,579,633.14
  5. Step 5: Solve for x
    x = 52,178,579,633.14/330,095.67
  6. Step 6: Final answer
    x = 158,071.08

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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.