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Finding the Fourth Proportional to 280,798.08, 387,495.65 and 153,474.58

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Solution

The fourth proportional to 280,798.08, 387,495.65 and 153,474.58 is: 211,791.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,798.08 : 387,495.65 = 153,474.58 : x
  2. Step 2: Convert to fraction form
    280,798.08/387,495.65 = 153,474.58/x
  3. Step 3: Cross multiply
    280,798.08x = 387,495.65 × 153,474.58
  4. Step 4: Simplify right side
    280,798.08x = 59,470,732,140.34
  5. Step 5: Solve for x
    x = 59,470,732,140.34/280,798.08
  6. Step 6: Final answer
    x = 211,791.81

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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.