Home / 209,210,038.11-288,712,508.72-115,135,016.63

Finding the Fourth Proportional to 209,210,038.11, 288,712,508.72 and 115,135,016.63

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Solution

The fourth proportional to 209,210,038.11, 288,712,508.72 and 115,135,016.63 is: 158,887,784.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,210,038.11 : 288,712,508.72 = 115,135,016.63 : x
  2. Step 2: Convert to fraction form
    209,210,038.11/288,712,508.72 = 115,135,016.63/x
  3. Step 3: Cross multiply
    209,210,038.11x = 288,712,508.72 × 115,135,016.63
  4. Step 4: Simplify right side
    209,210,038.11x = 33,240,919,490,746,980
  5. Step 5: Solve for x
    x = 33,240,919,490,746,980/209,210,038.11
  6. Step 6: Final answer
    x = 158,887,784.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.