Home / 209,953,036.30-314,929,554.45-128,323,698.70

Finding the Fourth Proportional to 209,953,036.30, 314,929,554.45 and 128,323,698.70

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Solution

The fourth proportional to 209,953,036.30, 314,929,554.45 and 128,323,698.70 is: 192,485,548.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,953,036.30 : 314,929,554.45 = 128,323,698.70 : x
  2. Step 2: Convert to fraction form
    209,953,036.30/314,929,554.45 = 128,323,698.70/x
  3. Step 3: Cross multiply
    209,953,036.30x = 314,929,554.45 × 128,323,698.70
  4. Step 4: Simplify right side
    209,953,036.30x = 40,412,925,256,967,040
  5. Step 5: Solve for x
    x = 40,412,925,256,967,040/209,953,036.30
  6. Step 6: Final answer
    x = 192,485,548.05

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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.