Home / 210,458.15-290,438.63-114,971.00

Finding the Fourth Proportional to 210,458.15, 290,438.63 and 114,971.00

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Solution

The fourth proportional to 210,458.15, 290,438.63 and 114,971.00 is: 158,663.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,458.15 : 290,438.63 = 114,971.00 : x
  2. Step 2: Convert to fraction form
    210,458.15/290,438.63 = 114,971.00/x
  3. Step 3: Cross multiply
    210,458.15x = 290,438.63 × 114,971.00
  4. Step 4: Simplify right side
    210,458.15x = 33,392,018,133.82
  5. Step 5: Solve for x
    x = 33,392,018,133.82/210,458.15
  6. Step 6: Final answer
    x = 158,663.46

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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.