Home / 309,035.91-426,475.19-186,528.45

Finding the Fourth Proportional to 309,035.91, 426,475.19 and 186,528.45

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Solution

The fourth proportional to 309,035.91, 426,475.19 and 186,528.45 is: 257,412.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,035.91 : 426,475.19 = 186,528.45 : x
  2. Step 2: Convert to fraction form
    309,035.91/426,475.19 = 186,528.45/x
  3. Step 3: Cross multiply
    309,035.91x = 426,475.19 × 186,528.45
  4. Step 4: Simplify right side
    309,035.91x = 79,549,755,221.51
  5. Step 5: Solve for x
    x = 79,549,755,221.51/309,035.91
  6. Step 6: Final answer
    x = 257,412.66

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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.