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Finding the Fourth Proportional to 423,414.17, 634,290.86 and 245,547.50

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Solution

The fourth proportional to 423,414.17, 634,290.86 and 245,547.50 is: 367,839.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,414.17 : 634,290.86 = 245,547.50 : x
  2. Step 2: Convert to fraction form
    423,414.17/634,290.86 = 245,547.50/x
  3. Step 3: Cross multiply
    423,414.17x = 634,290.86 × 245,547.50
  4. Step 4: Simplify right side
    423,414.17x = 155,748,533,718.11
  5. Step 5: Solve for x
    x = 155,748,533,718.11/423,414.17
  6. Step 6: Final answer
    x = 367,839.69

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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.