Home / 450,599.81-621,815.40-257,003.15

Finding the Fourth Proportional to 450,599.81, 621,815.40 and 257,003.15

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Solution

The fourth proportional to 450,599.81, 621,815.40 and 257,003.15 is: 354,657.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,599.81 : 621,815.40 = 257,003.15 : x
  2. Step 2: Convert to fraction form
    450,599.81/621,815.40 = 257,003.15/x
  3. Step 3: Cross multiply
    450,599.81x = 621,815.40 × 257,003.15
  4. Step 4: Simplify right side
    450,599.81x = 159,808,513,409.43
  5. Step 5: Solve for x
    x = 159,808,513,409.43/450,599.81
  6. Step 6: Final answer
    x = 354,657.31

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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.