Home / 230,021.40-317,438.64-128,051.40

Finding the Fourth Proportional to 230,021.40, 317,438.64 and 128,051.40

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Solution

The fourth proportional to 230,021.40, 317,438.64 and 128,051.40 is: 176,716.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,021.40 : 317,438.64 = 128,051.40 : x
  2. Step 2: Convert to fraction form
    230,021.40/317,438.64 = 128,051.40/x
  3. Step 3: Cross multiply
    230,021.40x = 317,438.64 × 128,051.40
  4. Step 4: Simplify right side
    230,021.40x = 40,648,462,266.10
  5. Step 5: Solve for x
    x = 40,648,462,266.10/230,021.40
  6. Step 6: Final answer
    x = 176,716.00

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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.