Home / 287,865,689.24-431,668,713.54-142,242,476.60

Finding the Fourth Proportional to 287,865,689.24, 431,668,713.54 and 142,242,476.60

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Solution

The fourth proportional to 287,865,689.24, 431,668,713.54 and 142,242,476.60 is: 213,299,567.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,865,689.24 : 431,668,713.54 = 142,242,476.60 : x
  2. Step 2: Convert to fraction form
    287,865,689.24/431,668,713.54 = 142,242,476.60/x
  3. Step 3: Cross multiply
    287,865,689.24x = 431,668,713.54 × 142,242,476.60
  4. Step 4: Simplify right side
    287,865,689.24x = 61,401,626,884,665,552
  5. Step 5: Solve for x
    x = 61,401,626,884,665,552/287,865,689.24
  6. Step 6: Final answer
    x = 213,299,567.05

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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.