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Finding the Fourth Proportional to 328,518.72, 453,328.65 and 185,313.96

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Solution

The fourth proportional to 328,518.72, 453,328.65 and 185,313.96 is: 255,717.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,518.72 : 453,328.65 = 185,313.96 : x
  2. Step 2: Convert to fraction form
    328,518.72/453,328.65 = 185,313.96/x
  3. Step 3: Cross multiply
    328,518.72x = 453,328.65 × 185,313.96
  4. Step 4: Simplify right side
    328,518.72x = 84,008,127,312.95
  5. Step 5: Solve for x
    x = 84,008,127,312.95/328,518.72
  6. Step 6: Final answer
    x = 255,717.93

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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.