Home / 287,713,065.60-431,569,598.40-105,922,627.20

Finding the Fourth Proportional to 287,713,065.60, 431,569,598.40 and 105,922,627.20

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Solution

The fourth proportional to 287,713,065.60, 431,569,598.40 and 105,922,627.20 is: 158,883,940.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,713,065.60 : 431,569,598.40 = 105,922,627.20 : x
  2. Step 2: Convert to fraction form
    287,713,065.60/431,569,598.40 = 105,922,627.20/x
  3. Step 3: Cross multiply
    287,713,065.60x = 431,569,598.40 × 105,922,627.20
  4. Step 4: Simplify right side
    287,713,065.60x = 45,712,985,682,176,912
  5. Step 5: Solve for x
    x = 45,712,985,682,176,912/287,713,065.60
  6. Step 6: Final answer
    x = 158,883,940.80

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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.