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Finding the Fourth Proportional to 255,510.82, 352,602.07 and 145,128.67

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Solution

The fourth proportional to 255,510.82, 352,602.07 and 145,128.67 is: 200,275.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,510.82 : 352,602.07 = 145,128.67 : x
  2. Step 2: Convert to fraction form
    255,510.82/352,602.07 = 145,128.67/x
  3. Step 3: Cross multiply
    255,510.82x = 352,602.07 × 145,128.67
  4. Step 4: Simplify right side
    255,510.82x = 51,172,669,458.35
  5. Step 5: Solve for x
    x = 51,172,669,458.35/255,510.82
  6. Step 6: Final answer
    x = 200,275.94

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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.