Home / 219,475.51-302,900.78-123,988.35

Finding the Fourth Proportional to 219,475.51, 302,900.78 and 123,988.35

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Solution

The fourth proportional to 219,475.51, 302,900.78 and 123,988.35 is: 171,117.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,475.51 : 302,900.78 = 123,988.35 : x
  2. Step 2: Convert to fraction form
    219,475.51/302,900.78 = 123,988.35/x
  3. Step 3: Cross multiply
    219,475.51x = 302,900.78 × 123,988.35
  4. Step 4: Simplify right side
    219,475.51x = 37,556,167,925.91
  5. Step 5: Solve for x
    x = 37,556,167,925.91/219,475.51
  6. Step 6: Final answer
    x = 171,117.81

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1.5x scale

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.