Home / 209,953,037.30-314,929,555.95-128,323,699.70

Finding the Fourth Proportional to 209,953,037.30, 314,929,555.95 and 128,323,699.70

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Solution

The fourth proportional to 209,953,037.30, 314,929,555.95 and 128,323,699.70 is: 192,485,549.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,953,037.30 : 314,929,555.95 = 128,323,699.70 : x
  2. Step 2: Convert to fraction form
    209,953,037.30/314,929,555.95 = 128,323,699.70/x
  3. Step 3: Cross multiply
    209,953,037.30x = 314,929,555.95 × 128,323,699.70
  4. Step 4: Simplify right side
    209,953,037.30x = 40,412,925,764,382,144
  5. Step 5: Solve for x
    x = 40,412,925,764,382,144/209,953,037.30
  6. Step 6: Final answer
    x = 192,485,549.55

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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.