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Finding the Fourth Proportional to 372,154.63, 513,384.03 and 243,168.51

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Solution

The fourth proportional to 372,154.63, 513,384.03 and 243,168.51 is: 335,448.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,154.63 : 513,384.03 = 243,168.51 : x
  2. Step 2: Convert to fraction form
    372,154.63/513,384.03 = 243,168.51/x
  3. Step 3: Cross multiply
    372,154.63x = 513,384.03 × 243,168.51
  4. Step 4: Simplify right side
    372,154.63x = 124,838,829,696.17
  5. Step 5: Solve for x
    x = 124,838,829,696.17/372,154.63
  6. Step 6: Final answer
    x = 335,448.81

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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.