Home / 290,332,365.40-435,498,548.10-128,774,301.40

Finding the Fourth Proportional to 290,332,365.40, 435,498,548.10 and 128,774,301.40

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Solution

The fourth proportional to 290,332,365.40, 435,498,548.10 and 128,774,301.40 is: 193,161,452.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,332,365.40 : 435,498,548.10 = 128,774,301.40 : x
  2. Step 2: Convert to fraction form
    290,332,365.40/435,498,548.10 = 128,774,301.40/x
  3. Step 3: Cross multiply
    290,332,365.40x = 435,498,548.10 × 128,774,301.40
  4. Step 4: Simplify right side
    290,332,365.40x = 56,081,021,292,291,800
  5. Step 5: Solve for x
    x = 56,081,021,292,291,800/290,332,365.40
  6. Step 6: Final answer
    x = 193,161,452.10

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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.