Home / 209,952,307.30-314,928,460.95-128,322,969.70

Finding the Fourth Proportional to 209,952,307.30, 314,928,460.95 and 128,322,969.70

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Solution

The fourth proportional to 209,952,307.30, 314,928,460.95 and 128,322,969.70 is: 192,484,454.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,307.30 : 314,928,460.95 = 128,322,969.70 : x
  2. Step 2: Convert to fraction form
    209,952,307.30/314,928,460.95 = 128,322,969.70/x
  3. Step 3: Cross multiply
    209,952,307.30x = 314,928,460.95 × 128,322,969.70
  4. Step 4: Simplify right side
    209,952,307.30x = 40,412,555,352,154,480
  5. Step 5: Solve for x
    x = 40,412,555,352,154,480/209,952,307.30
  6. Step 6: Final answer
    x = 192,484,454.55

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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.