Home / 211,128.08-315,897.57-148,071.29

Finding the Fourth Proportional to 211,128.08, 315,897.57 and 148,071.29

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Solution

The fourth proportional to 211,128.08, 315,897.57 and 148,071.29 is: 221,549.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,128.08 : 315,897.57 = 148,071.29 : x
  2. Step 2: Convert to fraction form
    211,128.08/315,897.57 = 148,071.29/x
  3. Step 3: Cross multiply
    211,128.08x = 315,897.57 × 148,071.29
  4. Step 4: Simplify right side
    211,128.08x = 46,775,360,895.20
  5. Step 5: Solve for x
    x = 46,775,360,895.20/211,128.08
  6. Step 6: Final answer
    x = 221,549.69

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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.