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Finding the Fourth Proportional to 290,911,054.52, 435,234,612 and 266,483,369

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Solution

The fourth proportional to 290,911,054.52, 435,234,612 and 266,483,369 is: 398,688,134.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,911,054.52 : 435,234,612 = 266,483,369 : x
  2. Step 2: Convert to fraction form
    290,911,054.52/435,234,612 = 266,483,369/x
  3. Step 3: Cross multiply
    290,911,054.52x = 435,234,612 × 266,483,369
  4. Step 4: Simplify right side
    290,911,054.52x = 115,982,785,711,167,824
  5. Step 5: Solve for x
    x = 115,982,785,711,167,824/290,911,054.52
  6. Step 6: Final answer
    x = 398,688,134.77

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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.