Home / 287,987,432-432,064,805.62-103,751,402.72

Finding the Fourth Proportional to 287,987,432, 432,064,805.62 and 103,751,402.72

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Solution

The fourth proportional to 287,987,432, 432,064,805.62 and 103,751,402.72 is: 155,657,242.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,987,432 : 432,064,805.62 = 103,751,402.72 : x
  2. Step 2: Convert to fraction form
    287,987,432/432,064,805.62 = 103,751,402.72/x
  3. Step 3: Cross multiply
    287,987,432x = 432,064,805.62 × 103,751,402.72
  4. Step 4: Simplify right side
    287,987,432x = 44,827,329,649,019,136
  5. Step 5: Solve for x
    x = 44,827,329,649,019,136/287,987,432
  6. Step 6: Final answer
    x = 155,657,242.88

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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.