Home / 371,384.16-512,632.08-218,415.66

Finding the Fourth Proportional to 371,384.16, 512,632.08 and 218,415.66

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Solution

The fourth proportional to 371,384.16, 512,632.08 and 218,415.66 is: 301,485.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,384.16 : 512,632.08 = 218,415.66 : x
  2. Step 2: Convert to fraction form
    371,384.16/512,632.08 = 218,415.66/x
  3. Step 3: Cross multiply
    371,384.16x = 512,632.08 × 218,415.66
  4. Step 4: Simplify right side
    371,384.16x = 111,966,874,090.37
  5. Step 5: Solve for x
    x = 111,966,874,090.37/371,384.16
  6. Step 6: Final answer
    x = 301,485.32

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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.