Home / 310,817,681.22-428,917,155.48-171,585,453.36

Finding the Fourth Proportional to 310,817,681.22, 428,917,155.48 and 171,585,453.36

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Solution

The fourth proportional to 310,817,681.22, 428,917,155.48 and 171,585,453.36 is: 236,781,718.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,817,681.22 : 428,917,155.48 = 171,585,453.36 : x
  2. Step 2: Convert to fraction form
    310,817,681.22/428,917,155.48 = 171,585,453.36/x
  3. Step 3: Cross multiply
    310,817,681.22x = 428,917,155.48 × 171,585,453.36
  4. Step 4: Simplify right side
    310,817,681.22x = 73,595,944,576,917,424
  5. Step 5: Solve for x
    x = 73,595,944,576,917,424/310,817,681.22
  6. Step 6: Final answer
    x = 236,781,718.11

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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.