Home / 257,889.60-355,869.81-143,159.22

Finding the Fourth Proportional to 257,889.60, 355,869.81 and 143,159.22

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Solution

The fourth proportional to 257,889.60, 355,869.81 and 143,159.22 is: 197,549.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,889.60 : 355,869.81 = 143,159.22 : x
  2. Step 2: Convert to fraction form
    257,889.60/355,869.81 = 143,159.22/x
  3. Step 3: Cross multiply
    257,889.60x = 355,869.81 × 143,159.22
  4. Step 4: Simplify right side
    257,889.60x = 50,946,044,421.15
  5. Step 5: Solve for x
    x = 50,946,044,421.15/257,889.60
  6. Step 6: Final answer
    x = 197,549.82

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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.