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Finding the Fourth Proportional to 210,019.40, 315,029.10 and 188,368.10

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Solution

The fourth proportional to 210,019.40, 315,029.10 and 188,368.10 is: 282,552.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,019.40 : 315,029.10 = 188,368.10 : x
  2. Step 2: Convert to fraction form
    210,019.40/315,029.10 = 188,368.10/x
  3. Step 3: Cross multiply
    210,019.40x = 315,029.10 × 188,368.10
  4. Step 4: Simplify right side
    210,019.40x = 59,341,433,011.71
  5. Step 5: Solve for x
    x = 59,341,433,011.71/210,019.40
  6. Step 6: Final answer
    x = 282,552.15

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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.