Home / 210,001.80-315,002.70-135,206.40

Finding the Fourth Proportional to 210,001.80, 315,002.70 and 135,206.40

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Solution

The fourth proportional to 210,001.80, 315,002.70 and 135,206.40 is: 202,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,001.80 : 315,002.70 = 135,206.40 : x
  2. Step 2: Convert to fraction form
    210,001.80/315,002.70 = 135,206.40/x
  3. Step 3: Cross multiply
    210,001.80x = 315,002.70 × 135,206.40
  4. Step 4: Simplify right side
    210,001.80x = 42,590,381,057.28
  5. Step 5: Solve for x
    x = 42,590,381,057.28/210,001.80
  6. Step 6: Final answer
    x = 202,809.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.