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Finding the Fourth Proportional to 346,564.71, 518,664.26 and 290,468.16

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Solution

The fourth proportional to 346,564.71, 518,664.26 and 290,468.16 is: 434,710.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,564.71 : 518,664.26 = 290,468.16 : x
  2. Step 2: Convert to fraction form
    346,564.71/518,664.26 = 290,468.16/x
  3. Step 3: Cross multiply
    346,564.71x = 518,664.26 × 290,468.16
  4. Step 4: Simplify right side
    346,564.71x = 150,655,453,986.13
  5. Step 5: Solve for x
    x = 150,655,453,986.13/346,564.71
  6. Step 6: Final answer
    x = 434,710.89

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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.