Home / 209,718,218.40-314,577,327.60-137,158,807.20

Finding the Fourth Proportional to 209,718,218.40, 314,577,327.60 and 137,158,807.20

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Solution

The fourth proportional to 209,718,218.40, 314,577,327.60 and 137,158,807.20 is: 205,738,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,718,218.40 : 314,577,327.60 = 137,158,807.20 : x
  2. Step 2: Convert to fraction form
    209,718,218.40/314,577,327.60 = 137,158,807.20/x
  3. Step 3: Cross multiply
    209,718,218.40x = 314,577,327.60 × 137,158,807.20
  4. Step 4: Simplify right side
    209,718,218.40x = 43,147,051,025,779,640
  5. Step 5: Solve for x
    x = 43,147,051,025,779,640/209,718,218.40
  6. Step 6: Final answer
    x = 205,738,210.80

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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.