Home / 384,931,931.80-531,216,511.02-217,693,201.76

Finding the Fourth Proportional to 384,931,931.80, 531,216,511.02 and 217,693,201.76

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Solution

The fourth proportional to 384,931,931.80, 531,216,511.02 and 217,693,201.76 is: 300,422,525.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,931,931.80 : 531,216,511.02 = 217,693,201.76 : x
  2. Step 2: Convert to fraction form
    384,931,931.80/531,216,511.02 = 217,693,201.76/x
  3. Step 3: Cross multiply
    384,931,931.80x = 531,216,511.02 × 217,693,201.76
  4. Step 4: Simplify right side
    384,931,931.80x = 115,642,223,111,720,112
  5. Step 5: Solve for x
    x = 115,642,223,111,720,112/384,931,931.80
  6. Step 6: Final answer
    x = 300,422,525.54

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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.