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Finding the Fourth Proportional to 315,464.23, 472,802.55 and 157,737.79

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Solution

The fourth proportional to 315,464.23, 472,802.55 and 157,737.79 is: 236,409.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,464.23 : 472,802.55 = 157,737.79 : x
  2. Step 2: Convert to fraction form
    315,464.23/472,802.55 = 157,737.79/x
  3. Step 3: Cross multiply
    315,464.23x = 472,802.55 × 157,737.79
  4. Step 4: Simplify right side
    315,464.23x = 74,578,829,343.36
  5. Step 5: Solve for x
    x = 74,578,829,343.36/315,464.23
  6. Step 6: Final answer
    x = 236,409.78

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1.5x scale

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.