Home / 388,746.06-536,471.01-225,434.40

Finding the Fourth Proportional to 388,746.06, 536,471.01 and 225,434.40

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Solution

The fourth proportional to 388,746.06, 536,471.01 and 225,434.40 is: 311,100.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,746.06 : 536,471.01 = 225,434.40 : x
  2. Step 2: Convert to fraction form
    388,746.06/536,471.01 = 225,434.40/x
  3. Step 3: Cross multiply
    388,746.06x = 536,471.01 × 225,434.40
  4. Step 4: Simplify right side
    388,746.06x = 120,939,020,256.74
  5. Step 5: Solve for x
    x = 120,939,020,256.74/388,746.06
  6. Step 6: Final answer
    x = 311,100.31

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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.