Home / 210,486.06-290,384.73-155,427.30

Finding the Fourth Proportional to 210,486.06, 290,384.73 and 155,427.30

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Solution

The fourth proportional to 210,486.06, 290,384.73 and 155,427.30 is: 214,426.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,486.06 : 290,384.73 = 155,427.30 : x
  2. Step 2: Convert to fraction form
    210,486.06/290,384.73 = 155,427.30/x
  3. Step 3: Cross multiply
    210,486.06x = 290,384.73 × 155,427.30
  4. Step 4: Simplify right side
    210,486.06x = 45,133,714,545.13
  5. Step 5: Solve for x
    x = 45,133,714,545.13/210,486.06
  6. Step 6: Final answer
    x = 214,426.15

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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.