Home / 357,117,143.40-492,875,444.97-217,968,765.39

Finding the Fourth Proportional to 357,117,143.40, 492,875,444.97 and 217,968,765.39

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Solution

The fourth proportional to 357,117,143.40, 492,875,444.97 and 217,968,765.39 is: 300,829,725.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,117,143.40 : 492,875,444.97 = 217,968,765.39 : x
  2. Step 2: Convert to fraction form
    357,117,143.40/492,875,444.97 = 217,968,765.39/x
  3. Step 3: Cross multiply
    357,117,143.40x = 492,875,444.97 × 217,968,765.39
  4. Step 4: Simplify right side
    357,117,143.40x = 107,431,452,231,157,792
  5. Step 5: Solve for x
    x = 107,431,452,231,157,792/357,117,143.40
  6. Step 6: Final answer
    x = 300,829,725.53

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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.