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Finding the Fourth Proportional to 358,476.80, 537,715.20 and 342,730.40

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Solution

The fourth proportional to 358,476.80, 537,715.20 and 342,730.40 is: 514,095.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,476.80 : 537,715.20 = 342,730.40 : x
  2. Step 2: Convert to fraction form
    358,476.80/537,715.20 = 342,730.40/x
  3. Step 3: Cross multiply
    358,476.80x = 537,715.20 × 342,730.40
  4. Step 4: Simplify right side
    358,476.80x = 184,291,345,582.08
  5. Step 5: Solve for x
    x = 184,291,345,582.08/358,476.80
  6. Step 6: Final answer
    x = 514,095.60

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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.