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Finding the Fourth Proportional to 390,009.94, 585,014.91 and 94,521.94

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Solution

The fourth proportional to 390,009.94, 585,014.91 and 94,521.94 is: 141,782.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,009.94 : 585,014.91 = 94,521.94 : x
  2. Step 2: Convert to fraction form
    390,009.94/585,014.91 = 94,521.94/x
  3. Step 3: Cross multiply
    390,009.94x = 585,014.91 × 94,521.94
  4. Step 4: Simplify right side
    390,009.94x = 55,296,742,405.13
  5. Step 5: Solve for x
    x = 55,296,742,405.13/390,009.94
  6. Step 6: Final answer
    x = 141,782.91

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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.