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Finding the Fourth Proportional to 402,505.54, 555,510.30 and 259,681.06

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Solution

The fourth proportional to 402,505.54, 555,510.30 and 259,681.06 is: 358,393.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,505.54 : 555,510.30 = 259,681.06 : x
  2. Step 2: Convert to fraction form
    402,505.54/555,510.30 = 259,681.06/x
  3. Step 3: Cross multiply
    402,505.54x = 555,510.30 × 259,681.06
  4. Step 4: Simplify right side
    402,505.54x = 144,255,503,544.92
  5. Step 5: Solve for x
    x = 144,255,503,544.92/402,505.54
  6. Step 6: Final answer
    x = 358,393.83

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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.