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Finding the Fourth Proportional to 248,451.16, 342,870.95 and 139,574.60

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Solution

The fourth proportional to 248,451.16, 342,870.95 and 139,574.60 is: 192,617.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,451.16 : 342,870.95 = 139,574.60 : x
  2. Step 2: Convert to fraction form
    248,451.16/342,870.95 = 139,574.60/x
  3. Step 3: Cross multiply
    248,451.16x = 342,870.95 × 139,574.60
  4. Step 4: Simplify right side
    248,451.16x = 47,856,075,697.87
  5. Step 5: Solve for x
    x = 47,856,075,697.87/248,451.16
  6. Step 6: Final answer
    x = 192,617.64

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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.