Home / 287,722,458.84-431,476,547.16-103,439,649.60

Finding the Fourth Proportional to 287,722,458.84, 431,476,547.16 and 103,439,649.60

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Solution

The fourth proportional to 287,722,458.84, 431,476,547.16 and 103,439,649.60 is: 155,120,955.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,722,458.84 : 431,476,547.16 = 103,439,649.60 : x
  2. Step 2: Convert to fraction form
    287,722,458.84/431,476,547.16 = 103,439,649.60/x
  3. Step 3: Cross multiply
    287,722,458.84x = 431,476,547.16 × 103,439,649.60
  4. Step 4: Simplify right side
    287,722,458.84x = 44,631,782,848,848,272
  5. Step 5: Solve for x
    x = 44,631,782,848,848,272/287,722,458.84
  6. Step 6: Final answer
    x = 155,120,955.90

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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.