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Finding the Fourth Proportional to 260,303.43, 390,486.75 and 73,314.93

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Solution

The fourth proportional to 260,303.43, 390,486.75 and 73,314.93 is: 109,981.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,303.43 : 390,486.75 = 73,314.93 : x
  2. Step 2: Convert to fraction form
    260,303.43/390,486.75 = 73,314.93/x
  3. Step 3: Cross multiply
    260,303.43x = 390,486.75 × 73,314.93
  4. Step 4: Simplify right side
    260,303.43x = 28,628,509,931.57
  5. Step 5: Solve for x
    x = 28,628,509,931.57/260,303.43
  6. Step 6: Final answer
    x = 109,981.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.