Home / 338,386.44-507,585.42-128,123.40

Finding the Fourth Proportional to 338,386.44, 507,585.42 and 128,123.40

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Solution

The fourth proportional to 338,386.44, 507,585.42 and 128,123.40 is: 192,187.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,386.44 : 507,585.42 = 128,123.40 : x
  2. Step 2: Convert to fraction form
    338,386.44/507,585.42 = 128,123.40/x
  3. Step 3: Cross multiply
    338,386.44x = 507,585.42 × 128,123.40
  4. Step 4: Simplify right side
    338,386.44x = 65,033,569,800.83
  5. Step 5: Solve for x
    x = 65,033,569,800.83/338,386.44
  6. Step 6: Final answer
    x = 192,187.28

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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.