Home / 378,529.36-522,238.60-242,638.22

Finding the Fourth Proportional to 378,529.36, 522,238.60 and 242,638.22

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Solution

The fourth proportional to 378,529.36, 522,238.60 and 242,638.22 is: 334,756.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,529.36 : 522,238.60 = 242,638.22 : x
  2. Step 2: Convert to fraction form
    378,529.36/522,238.60 = 242,638.22/x
  3. Step 3: Cross multiply
    378,529.36x = 522,238.60 × 242,638.22
  4. Step 4: Simplify right side
    378,529.36x = 126,715,044,319.29
  5. Step 5: Solve for x
    x = 126,715,044,319.29/378,529.36
  6. Step 6: Final answer
    x = 334,756.18

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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.