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Finding the Fourth Proportional to 371,642.37, 512,938.35 and 242,356.38

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Solution

The fourth proportional to 371,642.37, 512,938.35 and 242,356.38 is: 334,498.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,642.37 : 512,938.35 = 242,356.38 : x
  2. Step 2: Convert to fraction form
    371,642.37/512,938.35 = 242,356.38/x
  3. Step 3: Cross multiply
    371,642.37x = 512,938.35 × 242,356.38
  4. Step 4: Simplify right side
    371,642.37x = 124,313,881,669.17
  5. Step 5: Solve for x
    x = 124,313,881,669.17/371,642.37
  6. Step 6: Final answer
    x = 334,498.68

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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.