Finding the Fourth Proportional to 387,168,248.77, 534,292,260.18 and 210,956,244.13
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Solution
The fourth proportional to 387,168,248.77, 534,292,260.18 and 210,956,244.13 is: 291,119,658.79
Step by Step Solution
- Step 1: Write the proportion equation
387,168,248.77 : 534,292,260.18 = 210,956,244.13 : x - Step 2: Convert to fraction form
387,168,248.77/534,292,260.18 = 210,956,244.13/x - Step 3: Cross multiply
387,168,248.77x = 534,292,260.18 × 210,956,244.13 - Step 4: Simplify right side
387,168,248.77x = 112,712,288,475,301,552 - Step 5: Solve for x
x = 112,712,288,475,301,552/387,168,248.77 - Step 6: Final answer
x = 291,119,658.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.