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Finding the Fourth Proportional to 260,139.88, 358,985.70 and 152,708.20

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Solution

The fourth proportional to 260,139.88, 358,985.70 and 152,708.20 is: 210,733.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,139.88 : 358,985.70 = 152,708.20 : x
  2. Step 2: Convert to fraction form
    260,139.88/358,985.70 = 152,708.20/x
  3. Step 3: Cross multiply
    260,139.88x = 358,985.70 × 152,708.20
  4. Step 4: Simplify right side
    260,139.88x = 54,820,060,072.74
  5. Step 5: Solve for x
    x = 54,820,060,072.74/260,139.88
  6. Step 6: Final answer
    x = 210,733.01

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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.