Home / 287,987,436-432,064,811.62-103,751,406.72

Finding the Fourth Proportional to 287,987,436, 432,064,811.62 and 103,751,406.72

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Solution

The fourth proportional to 287,987,436, 432,064,811.62 and 103,751,406.72 is: 155,657,248.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,987,436 : 432,064,811.62 = 103,751,406.72 : x
  2. Step 2: Convert to fraction form
    287,987,436/432,064,811.62 = 103,751,406.72/x
  3. Step 3: Cross multiply
    287,987,436x = 432,064,811.62 × 103,751,406.72
  4. Step 4: Simplify right side
    287,987,436x = 44,827,331,999,786,800
  5. Step 5: Solve for x
    x = 44,827,331,999,786,800/287,987,436
  6. Step 6: Final answer
    x = 155,657,248.88

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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.