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Finding the Fourth Proportional to 258,151.16, 356,243.94 and 143,430.32

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Solution

The fourth proportional to 258,151.16, 356,243.94 and 143,430.32 is: 197,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,151.16 : 356,243.94 = 143,430.32 : x
  2. Step 2: Convert to fraction form
    258,151.16/356,243.94 = 143,430.32/x
  3. Step 3: Cross multiply
    258,151.16x = 356,243.94 × 143,430.32
  4. Step 4: Simplify right side
    258,151.16x = 51,096,182,312.26
  5. Step 5: Solve for x
    x = 51,096,182,312.26/258,151.16
  6. Step 6: Final answer
    x = 197,931.25

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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.