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Finding the Fourth Proportional to 346,509.48, 519,039.18 and 278,674.80

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Solution

The fourth proportional to 346,509.48, 519,039.18 and 278,674.80 is: 417,429.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,509.48 : 519,039.18 = 278,674.80 : x
  2. Step 2: Convert to fraction form
    346,509.48/519,039.18 = 278,674.80/x
  3. Step 3: Cross multiply
    346,509.48x = 519,039.18 × 278,674.80
  4. Step 4: Simplify right side
    346,509.48x = 144,643,139,678.66
  5. Step 5: Solve for x
    x = 144,643,139,678.66/346,509.48
  6. Step 6: Final answer
    x = 417,429.10

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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.