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Finding the Fourth Proportional to 210,488.66, 315,782.32 and 143,960.12

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Solution

The fourth proportional to 210,488.66, 315,782.32 and 143,960.12 is: 215,973.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,488.66 : 315,782.32 = 143,960.12 : x
  2. Step 2: Convert to fraction form
    210,488.66/315,782.32 = 143,960.12/x
  3. Step 3: Cross multiply
    210,488.66x = 315,782.32 × 143,960.12
  4. Step 4: Simplify right side
    210,488.66x = 45,460,060,681.08
  5. Step 5: Solve for x
    x = 45,460,060,681.08/210,488.66
  6. Step 6: Final answer
    x = 215,973.92

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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.