Home / 287,943,367.60-431,915,051.40-126,385,303.60

Finding the Fourth Proportional to 287,943,367.60, 431,915,051.40 and 126,385,303.60

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Solution

The fourth proportional to 287,943,367.60, 431,915,051.40 and 126,385,303.60 is: 189,577,955.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,943,367.60 : 431,915,051.40 = 126,385,303.60 : x
  2. Step 2: Convert to fraction form
    287,943,367.60/431,915,051.40 = 126,385,303.60/x
  3. Step 3: Cross multiply
    287,943,367.60x = 431,915,051.40 × 126,385,303.60
  4. Step 4: Simplify right side
    287,943,367.60x = 54,587,714,900,598,600
  5. Step 5: Solve for x
    x = 54,587,714,900,598,600/287,943,367.60
  6. Step 6: Final answer
    x = 189,577,955.40

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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.