Home / 208,209,581.91-287,329,226.13-115,396,068.47

Finding the Fourth Proportional to 208,209,581.91, 287,329,226.13 and 115,396,068.47

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Solution

The fourth proportional to 208,209,581.91, 287,329,226.13 and 115,396,068.47 is: 159,246,576.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,209,581.91 : 287,329,226.13 = 115,396,068.47 : x
  2. Step 2: Convert to fraction form
    208,209,581.91/287,329,226.13 = 115,396,068.47/x
  3. Step 3: Cross multiply
    208,209,581.91x = 287,329,226.13 × 115,396,068.47
  4. Step 4: Simplify right side
    208,209,581.91x = 33,156,663,050,492,948
  5. Step 5: Solve for x
    x = 33,156,663,050,492,948/208,209,581.91
  6. Step 6: Final answer
    x = 159,246,576.20

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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.