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Finding the Fourth Proportional to 315,155.84, 472,621.44 and 104,737.28

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Solution

The fourth proportional to 315,155.84, 472,621.44 and 104,737.28 is: 157,068.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,155.84 : 472,621.44 = 104,737.28 : x
  2. Step 2: Convert to fraction form
    315,155.84/472,621.44 = 104,737.28/x
  3. Step 3: Cross multiply
    315,155.84x = 472,621.44 × 104,737.28
  4. Step 4: Simplify right side
    315,155.84x = 49,501,084,095.28
  5. Step 5: Solve for x
    x = 49,501,084,095.28/315,155.84
  6. Step 6: Final answer
    x = 157,068.59

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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.