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Finding the Fourth Proportional to 153,415.89, 211,709.99 and 148,888.80

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Solution

The fourth proportional to 153,415.89, 211,709.99 and 148,888.80 is: 205,462.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,415.89 : 211,709.99 = 148,888.80 : x
  2. Step 2: Convert to fraction form
    153,415.89/211,709.99 = 148,888.80/x
  3. Step 3: Cross multiply
    153,415.89x = 211,709.99 × 148,888.80
  4. Step 4: Simplify right side
    153,415.89x = 31,521,245,614.67
  5. Step 5: Solve for x
    x = 31,521,245,614.67/153,415.89
  6. Step 6: Final answer
    x = 205,462.72

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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.