Home / 384,931,929.80-531,216,508.25-217,693,199.76

Finding the Fourth Proportional to 384,931,929.80, 531,216,508.25 and 217,693,199.76

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Solution

The fourth proportional to 384,931,929.80, 531,216,508.25 and 217,693,199.76 is: 300,422,522.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,931,929.80 : 531,216,508.25 = 217,693,199.76 : x
  2. Step 2: Convert to fraction form
    384,931,929.80/531,216,508.25 = 217,693,199.76/x
  3. Step 3: Cross multiply
    384,931,929.80x = 531,216,508.25 × 217,693,199.76
  4. Step 4: Simplify right side
    384,931,929.80x = 115,642,221,446,821,168
  5. Step 5: Solve for x
    x = 115,642,221,446,821,168/384,931,929.80
  6. Step 6: Final answer
    x = 300,422,522.77

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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.