Home / 257,051.40-385,683.75-157,215.12

Finding the Fourth Proportional to 257,051.40, 385,683.75 and 157,215.12

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Solution

The fourth proportional to 257,051.40, 385,683.75 and 157,215.12 is: 235,887.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,051.40 : 385,683.75 = 157,215.12 : x
  2. Step 2: Convert to fraction form
    257,051.40/385,683.75 = 157,215.12/x
  3. Step 3: Cross multiply
    257,051.40x = 385,683.75 × 157,215.12
  4. Step 4: Simplify right side
    257,051.40x = 60,635,317,038.30
  5. Step 5: Solve for x
    x = 60,635,317,038.30/257,051.40
  6. Step 6: Final answer
    x = 235,887.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.