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Finding the Fourth Proportional to 287,894.61, 397,088.88 and 249,585.66

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Solution

The fourth proportional to 287,894.61, 397,088.88 and 249,585.66 is: 344,249.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,894.61 : 397,088.88 = 249,585.66 : x
  2. Step 2: Convert to fraction form
    287,894.61/397,088.88 = 249,585.66/x
  3. Step 3: Cross multiply
    287,894.61x = 397,088.88 × 249,585.66
  4. Step 4: Simplify right side
    287,894.61x = 99,107,686,960.09
  5. Step 5: Solve for x
    x = 99,107,686,960.09/287,894.61
  6. Step 6: Final answer
    x = 344,249.89

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1.5x scale

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.